Pull-out guide

ABSTRACT

The invention relates to a pull-out guide comprising a fixable guide rail and a movably supported running rail, between which a middle rail is optionally arranged, wherein at least one latching device is provided for fixing the running rail on the guide rail in a releasable manner and the latching device comprises a spring element and an engaging element, wherein the spring element and the engaging element of the at least one latching device are arranged in a defined position on an outside of the pull-out guide.

The present invention relates to a pull-out guide, comprising a fixable guide rail and a movably supported running rail, between which a middle rail is optionally arranged, wherein at least one latching device is provided for fixing the running rail to the guide rail in a releasable manner and the latching device comprises a spring element and an engaging element.

A pull-out guide is known from WO 2010/060724 in which one or several spring elements are provided as latching means. The spring elements cooperate with a profiling or recess on the rail. Although these spring elements can provide a latching function, they lie in the inner side or in the inner region of the pull-out guide when it is in a retracted position. As a result, they are difficult to access. Furthermore, the spring elements are arranged as filigree components due to the limited available space, which can be damaged in permanent operation.

It is therefore the object of the present invention to provide a pull-out guide which comprises an easily accessible latching device in order to latch the running rail to the guide rail in at least one position.

This object is achieved by a pull-out guide with the features of claim 1.

In accordance with the invention, the at least one latching device of the pull-out guide with the spring element and the engaging element is arranged on an exterior side of the pull-out guide in the retracted position. As a result, the spring element and the engaging element are easily accessible from the outside and can easily be mounted and even exchanged in the case of damage insofar as the connecting point is arranged to be reversible. Furthermore, larger components can be mounted on the outside which are also suitable for permanent operation.

In one embodiment, the at least one latching device is arranged on an inner side relating to the installed position of the pull-out guide. A pull-out guide is mostly installed in a furniture body or a domestic appliance and is therefore fixed to a side wall, a side grating or fastening elements. The side of the pull-out guide facing the side wall forms the exterior side, whereas the side facing the interior space directed towards a drawer or food carrier forms the inner side. The mounting of the latching device on the inner side leads to the advantage that accessibility is also provided in the installed position.

The spring element is preferably bendable by the engaging element in a direction perpendicularly to the direction of movement of the running rail. The spring element can be bent to the inside or the outside in order to achieve latching. Latching can act in this case only in one direction, i.e. render the movement of the running rail in one direction more difficult, or act on both sides in order to prevent a movement of the running rail at a specific latching position or beyond a specific latching region.

The spring element is preferably bendable and the engaging element is preferably arranged in a dimensionally stable manner. The spring element can be arranged as a V-shaped bent strip for example. An arrangement as a vertical web which is pivoted to the outside or the inside is also possible.

For the purpose of forming a latching device with few components, the engaging element can also be arranged integrally with the running rail or the guide rail. For this purpose, the engaging element can be arranged as a V-shaped web for example. This leads to the advantage that the latching forces can be set by setting the angle of inclination of the legs of the V-shaped web. The latching forces can similarly be varied by the height and the passage depth of the V-shaped web.

A middle rail is provided according to one embodiment, which in the retracted position is accommodated in an interior space between the guide rail and the running rail. The guide rail and the running rail are arranged by angular or U-shaped profiles, which form the cavities between themselves so that the middle rail is arranged in a protected way.

For example, the spring element and/or the engaging element are coated at least in regions by a lubricant. As a result, smooth latching can be ensured for permanent use of the latching device. Lubricant compositions with an organic silicon compound, boron nitride, graphite, silicone oil or other lubricants are suitable as lubricants.

Alternatively, the spring element and/or the engaging element can be provided with a sliding element made of heat-resistant material with good sliding properties, e.g. made of PEEK or LCP.

The spring element and/or the engaging element are fixed to the running rail or the guide rail in a positive or non-positive way or by means of a bonded connection, preferably welded thereto and therefore fixed in a non-detachable manner. Other joining methods can be considered for fixing the spring element and/or the engaging element such as screws, rivets or clamps. The fixing points for fixing the spring element and/or the engaging element can also be produced by laser welding.

Two latching positions can be provided in the pull-out guide, a latching position in a closed position and a latching position in an extended position of the pull-out guide. For this purpose, two spring elements can cooperate with an engaging element or two engaging elements with a spring element.

Randomly defined latching positions can be generated on the entire path of displacement of the pull-out guide as a result of the interaction of spring elements and/or engaging element in accordance with the invention.

According to a further embodiment, the spring element is fixed to the running rail and protrudes beyond the running rail in the longitudinal direction of the running rail. As a result, the pull-out guide can be arranged as an overextension system, in which the running rail, in a completely extended position, is arranged spaced from the guide rail in the longitudinal direction. Latching in the open position can still occur by way of the protruding spring element. Alternatively, the spring element can also be arranged in the region of the running rail.

In a further embodiment, the spring element is arranged as an angular plate with a flexible spring web and a holding section, wherein the holding section is fixed to the running rail or the guide rail. The holding section can extend in the longitudinal direction of the guide rail or the running rail and can be fixed to the guide rail or the running rail only in the region of the part facing away from the flexible spring web. Especially smooth latching can be realized in this manner because the spring element is not only able to bend in the region of the flexible spring web but also at least partly in the region of the holding section. The spring constant can thus be increased or reduced by displacing the fixing position (e.g. the welding position) on the elongated spring part in the longitudinal direction.

In order to increase the holding forces in a latched position, at least two latching devices are preferably provided in order to latch the running rail in a predetermined position onto the guide rail, e.g. in an extended pull-out position. The latching devices can be arranged on opposite sides of the running rail and/or the guide rail. This leads to the advantage that no or only very low torsional forces act on the running rail during latching, so that twisting of the rail is substantially prevented. This reduces wear and tear and improves smooth running during the displacement of the running rail. The latching devices can be fixed with the spring elements both to the running rail or the guide rail. Fixing can also be provided with only one respective spring element to the running rail and one spring element to the guide rail.

In one embodiment, the spring elements of the two latching devices are arranged offset to each other in the longitudinal direction of the running rail, but are latched substantially simultaneously. As a result of this offset configuration of the spring elements, the installation depth of the pull-out guide is substantially reduced and very little overall space is required.

The pull-out guide in accordance with the invention is preferably used in a domestic appliance such as a baking oven, wherein at least one pull-out guide is respectively arranged on opposite sides of the baking oven muffle.

The invention will be explained below by reference to several embodiments shown in the enclosed drawings, wherein:

FIGS. 1 to 6 show several views of a first embodiment of a pull-out guide in accordance with the invention;

FIGS. 7 and 8 show two views of a second embodiment of a pull-out guide in accordance with the invention;

FIGS. 9 to 11 show detailed views of a modified embodiment;

FIGS. 12 and 13 show views of a modified embodiment;

FIGS. 14 and 15 show two views of a further embodiment;

FIGS. 16 and 17 show two views of a further embodiment;

FIG. 18 shows a view of a spring element that can be mounted on a pull-out guide;

FIGS. 19 to 21 show views of a further embodiment of an engaging element;

FIGS. 22 and 23 show two views of a further embodiment of a pull-out guide;

FIG. 24 shows a perspective view of the spring element of FIG. 22;

FIG. 25 shows a perspective view of a further embodiment of a pull-out guide;

FIGS. 26 and 27 show two perspective views of a pull-out guide according to a further embodiment in an extended position;

FIG. 28 shows a perspective view of the pull-out guide of FIG. 26 in the retracted position;

FIG. 29 shows a front view of the pull-out guide of FIG. 28 without a plate;

FIG. 30 shows a perspective view of the pull-out guide of FIG. 26, and

FIG. 31 shows a rear view of the pull-out guide of FIG. 30.

A pull-out guide 1 comprises a displaceably mounted running rail 2 and a fixable stationary guide rail 4, between which a cavity is formed in which a middle rail 3 is arranged which is arranged in a substantially covered way in a retracted position. A front clamp 5 and a rear clamp 6 are fixed to the guide rail 4 in the bottom region, which can be fixed to a side grating for a baking oven. The pull-out guide 1 can also be used for other domestic appliances or pieces of furniture, so that other fastening means can be used for fixing the guide rail 4 instead of the clamps 5 and 6.

A plate-shaped stop 7 is fixed to the running rail 2 at the front side, whereas an upwardly protruding pin 8 is arranged on the rear side. Food carriers and other components can be positioned in a defined manner on the running rail 2 by the plate 7 and the pin 8 which protrude upwardly beyond the running rail 2.

Latching devices are provided in order to detachably fix the pull-out guide in the retracted position (FIG. 1) and in an extended open position (FIG. 5). A first latching device comprises a spring element 10 which is fixed with a flat web 11 to the guide rail 4, e.g. by welding or gluing. The spring element 10 comprises one flexible section 12 which protrudes from the running rail 4 in a V-shaped or a U-shaped manner and which cooperates with an engaging element 20. The engaging element 20 is arranged as a metallic plate which is fixed to the running rail 2 with a flat vertical section. The engaging element 20 comprises an outwardly protruding step 21, on which two pins 22 protrude which face downwardly and between which the arc-shaped section 12 of the spring element 10 can be inserted. In the latched position (FIG. 2), the running rail 2 is detachably fixed to the spring element 10 via the engaging element 20, wherein the spring element 10 needs to be pressed in a direction perpendicularly to the direction of movement of the running rail 2 to the guide rail 4 both in the opening direction and also in the closing direction in order to release the engaging element 20.

The running rail 2 can then be displaced after unlocking to an open position, wherein in this case the middle rail 3 becomes visible between the running rail 2 and the guide rail 4. In an open position, the engaging element 20 engages the downwardly facing pins 22 in a second spring element 30 which is fixed to a front region of the guide rail 4. The spring element 30 comprises a strip-like section 31, which is fixed to the guide rail 4 in a positive or non-positive or materially bonded manner (e.g. by welding or gluing), and an inwardly protruding bent section 32. The arc-shaped section 32 can be moved like the spring element 10 between the two pins 22 for the latched position. Furthermore, a stop 33 which protrudes inwardly from the guide rail 4 is arranged on the spring elements 30, which stop prevents that the engaging element 20 is moved beyond the open position. As a result, the running rail 2 can only be moved in the closing direction from the latched open position. Such a stop 33 can also be provided in the spring element 10, so that stops can be omitted on the guide rail 4, the middle rail 3 and the running rail 2. The stop can be overcome by manually pressing down the spring element 30 in order to further extend the pull-out guide, if necessary.

In the description of the following embodiments, the same reference numerals are used in FIGS. 1 to 6 for the same or functionally identical components.

A pull-out guide 1 is shown in the embodiment shown in FIGS. 7 and 8, wherein a middle section is not shown in the running rail 2 and the guide rail 4, so that the rolling bodies 15 are visible which are held in a rolling body cage. The running rail 2, the middle rail 3 and the guide rail 4 are displaceably mounted with respect to each other via rolling bodies 15. In the retracted state, the rolling body cages with the rolling bodies 15 are remote from the latching position and potentially require a different latching height than in the extended latching position for compensating radial movement tolerances.

In the case of the embodiment shown in FIGS. 7 and 8, latching devices are also provided on the outside of the pull-out guide 1, wherein the latching device comprises a spring element 40 which is fixed to the running rail 2 and comprises a flexible vertical web 41 which can be latched onto the engaging elements 50. The engaging elements are formed by V-shaped bent webs which protrude on the inside of the guide rail 4.

An engaging element 40 is active in the closed position, whereas the other engaging element 40 arranged in the front region is active in the open position. The engaging elements 50 allow latching in only one direction, so that the stops for limiting the opening movement of the running rail 2 and the stops for limiting the closing movement of the running rail 2 are arranged on the running rail 2, the middle rail 3 and/or the guide rail 4. As is shown in FIG. 8, the rolling bodies 15 are situated in the extended position of the pull-out guide 1 directly in the region of the spring element 40 and the engaging element 50, so that latching in this region can occur with special precision, because the adjacent rolling bodies 15 ensure precise positioning of the running rail 2, the middle rail 3 and the guide rail 4 in this region.

FIGS. 9 to 11 show the latching device shown in FIGS. 7 and 8 in a slightly modified configuration. The spring element 40 comprises the downwardly facing flexible web 41, as already shown in FIGS. 7 and 8. In addition, the spring element 40 comprises an upper horizontal section 42 and a stop 43 which protrudes upwardly from the running rail 2 and cooperates with a component placed on the running rail 2, e.g. a baking tray. As a result, the spring element 40 fulfils several functions on the running rail. The spring element 40 can be produced in a simple way by punching and bending a sheet metal.

For the purpose of latching on the engaging element 50, it is integrally punched and bent with the guide rail 4, wherein the engaging element 50 is arranged as a V-shaped web with a tip 51 and two legs 52. During the closing and opening of the pull-out guide 1, the spring element 40 is displaced together with the flexible web 41 along the leg 52 over the tip 51 for latching.

FIGS. 12 and 13 show a latching device which is modified in comparison to the one shown in FIGS. 9 to 11, wherein the spring element 40 with the vertical web 41 is arranged in a constructionally identical manner. Only the engaging element 50′ is modified because the legs 52′, which are aligned to each other at a tip 51′, are aligned at another angle relative to the longitudinal direction of the guide rail 4. The angle α between the longitudinal direction of the guide rail 4 and the legs 52′ is greater than in the preceding embodiment, so that the latching forces are greater when the spring element 40 travels over the engaging elements 50′, i.e. there is a stronger latching in the open and closed position. The engaging element 50 and 50′ is arranged symmetrically to a middle plane extending through the tip 51 and 51′, both in the embodiment of FIGS. 9 to 11 and also of FIGS. 12 and 13, i.e. the legs 52 and 52′ are aligned at the same angle in relation to the guide rail 4.

In the embodiment shown in FIGS. 14 and 15, an engaging element 50″ is shown which comprises a tip 51″ which connects a flatter leg 52″ to a steeper leg 53″. The engaging element 50″ is arranged integrally with the guide rail 4, wherein the leg 52″ is aligned at an angle β in relation to the longitudinal axis of the guide rail 4 and the leg 53″ at an angle δ. The angle β lies in a range of 20° to 50° for example, whereas the angle δ is larger and lies in a range of 35° to 75°. As a result, the latching forces can be provided with different magnitudes when travelling over the spring element 40 of the engaging element 50″. For example, travelling over the leg 53″ will occur less smoothly than in the case of flat leg 52″, so that the retaining forces are differently large during the opening and closing of the running rail.

FIGS. 16 and 17 show a further embodiment of an engaging element 50″, which is arranged integrally as a strip-shaped web with the guide rail 4. A flatter leg 52″ is also provided in this embodiment, which leg extends at an angle of between 15° to 30° in relation to the guide rail 4, whereas an opposite leg 53″ is arranged more steeply and extends at an angle of between 20° and 35° in relation to the longitudinal axis of the guide rail 4. The legs 52″ and 53″ are connected to each other in a meeting region at a tip 51″.

FIG. 18 shows a further embodiment of a spring element 60 which comprises a flexible web 61 which is aligned vertically in the installation position. The flexible web 61 is connected via a step section 62 to a vertical holding web 63, which is connected via a bent section 64 to a sleeve 65. The sleeve 65 is selectively fixed to the upper side of the running rail 2 and forms a stop, like the stop 8 in the running rail 2 of FIG. 1. Alternatively, the sleeve 65 can be inserted into such a stop pin 8 for mounting the spring element 60.

FIGS. 19 to 21 show a further embodiment of a spring element 70 or an engaging element, in which a flat strip-like section 71 can be fixed to a running rail 2 or a guide rail 4. A bent section 72 extends from said flat section 71 to a receiving section 73, which is connected via a step 74 to the section 72. A cover 75 is mounted on the receiving section 73, which cover is made of a material with a low coefficient of friction. The cover 75 comprises a pin 76 which is inserted into an opening 77 on the bent receiving section 73 of the spring element 70. The spring element 70 forms a part of a latching device, in which a sliding surface for the co-operation of the spring element 70 with an engaging element is arranged on the cover 75.

FIGS. 22 and 23 show a further embodiment of a pull-out guide, in which a spring element 80 is fixed to the running rail 2. The spring element 80 cooperates with two engaging elements 50 which are arranged integrally with the guide rail 4 as angular projections. The spring element 80 is mounted on the running rail 2 in such a way that it protrudes at the rear in the longitudinal direction of the running rail 2. As a result, the running rail 2 can be arranged to be spaced from the guide rail 4 in the longitudinal direction in a complete pull-out position, wherein latching is still enabled via the spring element 80. The engaging elements 50 can be arranged according to those shown in FIGS. 9 to 17.

FIG. 24 shows the spring element 80 in detail. The spring element 80 is arranged as an angular plate with a downwardly protruding spring web 81 and a strip-like holding section 82 extending in the longitudinal direction. The length L of the holding section 82 can be substantially larger than the height H of the spring web 81. For the purpose of setting the latching forces, it is possible to carry out in the spring web 81 a fixing of the holding section 82 to the running rail 2 spaced from the spring web 81, e.g. only in the left half of the holding section 82. Half the length of the holding section 82 would thus additionally be available as a lever length for bending the spring web 81. The fixing of the holding section 82 to the running rail 2 by positive or non-positive or material connection, e.g. by gluing or welding, can be chosen accordingly for setting the desired latching force.

FIG. 25 shows a modified embodiment of a pull-out guide, in which the aforementioned spring element 80 is fixed in the region of the running rail 2, i.e. it does not protrude to the rear. This arrangement of the spring element 80 offers the advantage that the middle rail 3 is protected even better by the running rail 2 and a more appealing visual appearance is provided and the spring is protected against inadvertent bending. The extension of the running rail in the region facing the rear wall of the furnace muffle advantageously occurs by the amount of the protruding portion of the holding section 82 in the direction of the region facing the rear wall of the furnace muffle.

FIGS. 26 to 31 show a further embodiment of a pull-out guide in accordance with the invention, in which the same reference numerals are used for the same components. The pull-out guide comprises a guide rail 4 which can be fixed to a side grating of a pull-out guide or any other element, a middle rail 3 and a movable running rail 2 which can be latched in a pull-out position by two latching devices. No latching device is provided in the retracted position, but one or two latching devices can obviously latch the running rail 2 in the retracted position.

Each latching device comprises a spring element 80, which is arranged according to FIG. 24 and has a substantially L-shaped contour. An elongated holding section 82 and an angularly protruding spring web 81 are arranged, wherein the spring web 81 can be latched on to an engaging element 50. The engaging element 50 is arranged as a V-shaped web which is preferably punched and embossed from a side wall of the running rail 2 or the guide rail 4. The holding section 82 is fixed by fastening point 84 (arranged in this embodiment as welding spots) to the running rail 2 or the guide rail 4, wherein the fastening points 84 determine the length of the lever path with respect to the movement of the spring web 81 and the non-fixed holding section 82 and thus predetermine the latching forces when travelling over the engaging element 50.

In the embodiment shown in FIGS. 26 to 31, the one latching device is arranged on opposite sides, wherein a first latching device comprises a spring element 80 which is fixed to the running rail 2, whereas a spring element 80 is fixed to the guide rail 4 on the opposite side. The spring elements 80 are arranged offset with respect to each other in the longitudinal direction of the running rail 2 and ensure a reduced installation width of the pull-out guide. It is obviously also possible to fix both spring elements 80 to the running rail 2 or the guide rail 4.

A substantially symmetrical introduction of forces occurs by the latching devices on opposite sides of the running rail 2, which substantially prevents a rotational movement about an axis parallel to the running rail 2.

As is shown in FIGS. 29 and 31, the running rail 2 and the guide rail 4 have a substantially U-shaped cross-section, wherein one leg of the U is arranged longer and forms an inwardly bent end section. Three running tracks for sets of spherical rolling bodies 15 are thus created, which are held along a rolling body cage 16. The middle rail 3 substantially has the shape of an “8” in its cross-section, which comprises inwardly rounded sections for the formation of running tracks for the spherical rolling bodies 15.

As is shown in FIGS. 29 and 31, the spring webs 81 are bent outwardly, i.e. away from the running rail 2 or the guide rail 4, when travelling over the V-shaped, outwardly protruding engaging elements 50 with the legs 52 protruding obliquely in relation to a tip 51. The spring webs 81 are arranged at an angle W in relation to an adjacent surface of the running rail 2 or the guide rail 4, on which the outwardly protruding engaging element 50 is arranged. The angle W preferably lies in a range of between 1° and 10° and ensures a defined sliding surface of the spring web 81 over the tip 51 of the engaging element 50. The pressing forces of the spring web 81 against the engaging element 50 must be low enough so that premature wear and tear will not occur, and must not be so low that the latching forces are insufficient.

In order to enable the angular arrangement of the spring web 81, an outwardly protruding arched portion 83 is formed between the holding section 82 and the spring web 81, which arched portion ensures that the spring web 81 is arranged further to the outside adjacent to the holding section 82 than at the protruding end.

The guide rail 4 is preferably fixed to a side grating which is mounted in a baking oven. The side grating can be welded together with the guide rail 4. The welding preferably occurs in such a way that the holding section 82 is fixed with the fastening points 84 to the guide rail 4.

In the illustrated embodiment, the spring elements and the engaging elements can be provided with a coating at least in the contact regions, especially a lubricant, in order to enable smooth latching. The latching devices can be arranged in such a way that they are heat-resistant and can withstand temperatures of up to 250° without impairment of the latching function. The pull-out guides can also be designed for temperatures of up to 500° C. for pyrolysis operation of a baking oven. The pull-out guide in accordance with the invention is fixed especially to a side grating of baking oven, wherein other purposes are possible, e.g. for furniture or other domestic appliances.

LIST OF REFERENCE NUMERALS

-   1 Pull-out guide -   2 Running rail -   3 Middle rail -   4 Guide rail -   5 Clamp -   6 Clamp -   7 Stop/plate -   8 Pin -   10 Spring element -   11 Web -   12 Section -   15 Rolling body -   16 Rolling body cage -   20 Engaging element -   21 Step -   22 Pin -   30 Spring element -   31 Section -   32 Section -   33 Stop -   40 Engaging element -   41 Web -   42 Section -   43 Stop -   50 Engaging element -   50′ Engaging element -   50″ Engaging element -   50′″ Engaging element -   51 Tip -   51′ Tip -   51″ Tip -   51′″ Tip -   42 Leg -   52′ Leg -   52″ Leg -   52′″ Leg -   53 Leg -   53′ Leg -   53″ Leg -   53′″ Leg -   60 Spring element -   61 Web -   62 Step section -   63 Holding web -   64 Section -   65 Sleeve -   70 Spring element -   71 Section -   72 Section -   73 Receiving section -   74 Step -   75 Cover -   76 Pin -   77 Opening -   80 Spring element -   81 Spring web -   82 Holding section -   83 Arched portion -   84 Fastening point -   L Length of holding section -   H Height of spring web -   W Angle -   α Angle -   β Angle -   γ Angle 

1. A pull-out guide, comprising a fixable guide rail and a movably supported running rail, wherein at least one latching device is provided for fixing the running rail to the guide rail in a releasable manner, and the latching device comprises a spring element and an engaging element wherein the at least one latching device with the spring element and the engaging element is arranged on an exterior side of the pull-out guide in a defined position.
 2. The pull-out guide according to claim 1, wherein the at least one latching device is arranged on an inner side with respect to the installed position of the pull-out guide.
 3. The pull-out guide according to claim 1, wherein the spring element is bendable by the engaging element in a direction perpendicularly to the direction of movement of the running rail.
 4. The pull-out guide according to claim 1, wherein the spring element is flexible and the engaging element is arranged in a dimensionally stable manner.
 5. The pull-out guide according to claim 1, wherein the spring element is arranged as a V-shaped bent strip.
 6. The pull-out guide according to claim 1, wherein the spring element is arranged as a vertical web.
 7. The pull-out guide according to claim 1, wherein the engaging element is arranged integrally with the running rail or the guide rail.
 8. The pull-out guide according to claim 7, wherein the engaging element is arranged as a V-shaped web.
 9. The pull-out guide according to claim 1, wherein the spring element and/or the engaging element are coated at least in part by a lubricant.
 10. The pull-out guide according to claim 1, wherein the spring element and/or the engaging element are fixed in a positive, non-positive or materially bonded manner to the running rail (2) and/or the guide rail (4).
 11. The pull-out guide according to claim 1, wherein two latching positions are provided and two spring elements cooperate with one engaging element or two engaging elements cooperate with one spring element.
 12. The pull-out guide according to claim 1, wherein the spring element is fixed to the running rail and protrudes beyond the running rail in the longitudinal direction of the running rail.
 13. The pull-out guide according to claim 1, wherein the spring element is arranged as an angular plate with a flexible spring web and a holding section, and the holding section is fixed to the running rail or the guide rail.
 14. The pull-out guide according to claim 13, wherein the holding section extends in the longitudinal direction of the guide rail or the running rail and is fixed to the guide rail or the running rail only in the region of the half facing away from the flexible spring web.
 15. The pull-out guide according to claim 13, wherein the spring web is arranged at an angle of between 0.5° to 15°, especially 1° to 10°, in relation to the surface of the running rail or the guide rail on which the engaging element is arranged.
 16. The pull-out guide according to claim 1, wherein at least two latching devices are provided in order to latch the running rail at a predetermined position on to the guide rail.
 17. The pull-out guide according to claim 16, wherein the latching devices are arranged on opposite sides of the running rail and/or the guide rail.
 18. The pull-out guide according to claim 16, wherein the spring elements of the latching devices are both fixed to the running rail or the guide rail.
 19. The pull-out guide according to claim 16, wherein one spring element (80) of the latching devices is fixed to the running rail (2) and one spring element (80) to the guide rail (4).
 20. The pull-out guide according to claim 19, wherein the spring elements are arranged offset in the longitudinal direction of the running rail, but can be latched together in a substantially simultaneous manner.
 21. A baking oven, comprising a baking oven muffle, characterized in that at least one pull-out guide according to claim 1 is arranged on opposite sides of the banking oven muffle, especially fixed to a side grating.
 22. The pull-out guide according to claim 1, further comprising a middle rail arranged between said guide rail and said running rail. 